How Can I Find Info About Craft That Just Passed Overhead

I was outside roughly ten minutes ago when eight helicopters passed overhead. I don't see well even with my glasses; that combined with the distance
and glare prevented me from getting much detail as to the size or color of the craft.

The were in single file and equidistant to each other (impressive to behold, honestly) except for the last one, which was following more closely. They
were flying south. I'm not concerned about anything, but I can't recall seeing anything similar so naturally curious.

I've never been interested in doing this sort of thing. How can I find information about those eight helicopters?

Thanks.

edit on 18/10/2018 by DictionaryOfExcuses because: (no reason given)

ETA: Search gives me lots of results about how to point an iPhone skywards and getting information with Siri. Since I don't use a smartphone I can't
do that.

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